Home / 380,189.12-570,107.52-213,976.96

Finding the Fourth Proportional to 380,189.12, 570,107.52 and 213,976.96

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Solution

The fourth proportional to 380,189.12, 570,107.52 and 213,976.96 is: 320,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,189.12 : 570,107.52 = 213,976.96 : x
  2. Step 2: Convert to fraction form
    380,189.12/570,107.52 = 213,976.96/x
  3. Step 3: Cross multiply
    380,189.12x = 570,107.52 × 213,976.96
  4. Step 4: Simplify right side
    380,189.12x = 121,989,874,002.74
  5. Step 5: Solve for x
    x = 121,989,874,002.74/380,189.12
  6. Step 6: Final answer
    x = 320,866.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.